Heating boiler



E. H. M CATHRON Jan. 22, 1935.

HEATING BOILER Filed Feb. 25, 1933 2 Sheets-Sheet l INVENTOR.FarlElYcCal/irorz ATTORNEY Jan. 22, 1935. E, H, MCCATHRON 1,988,503

HEATING BOILER Filed Feb. 25, 1933 -2"SheetsSheet 2 11v VENTOR. Far/HMCad/cram BY m ATTORNEY Patented Jan. 22, 1935' V v i This inventionrelates to boilers such as are Fig. 3 shows a similar cross sectionof anoval used for-steam, vapor or-hot water heating and 'shaped-boilen j T a'is designed to be madeoi; sheet steel weld *tc- .1 Reierring indetail'to the characters of refg'ethei" to form a singleiunit v*erenceimarkedf upon the'drawings, 10 represents 5 'The purpose of theinvention is to designs, the outer casing of the boiler whichis of an 5steel boilerin a way 'whichwill be especially elongatedcylindrical-form;though may obviously adapted for the use of oilburnersgand which will beof" any other preferred shape, and serves to notbe materially affectedbythe frequent and exform the: outer water jacket of the boiler, andcessive changes in temperature a'scausedby 'the which may becoveredwithanrasbestos jacket or use of an oil burner, and which I find-has provenother suitable covering, not shown, This casing, 10

destructive to many of the boilers'formedof cast as well as otherpartsof the boiler, isfabricated iron, as well as some makes ofboilersfor-med of of" sheetisteeLbeing welded together .to form my steelplatei; 1 I r novel structure. I. I

With the above object in view,;I;have produced The boiler includes acombustion chamber 11 a boiler, thefire passages of which aremade'of inwhich an oil burn r; n ts wny y be lposi- 15 heavy-boiler plate;assembledand welded together timed: and which is also adapted for gratesfor to form a series of relatively flat heat chambers burning coal. Anash pit 12 is formed beneath arranged one abovethe other and connectedby the combustion chamber, adoor 13 being proshort pipes that arestaggeringly arranged above vided for the latter, and a door 14 for theash and below 'said fiat heat chambers and which pit. The side walls ofthe combustion chamber 20 when assembled, are arranged somewhat intheare cylindrical in form and. arranged in-spaced form ofa bellows that-issupported between the relation totheouter jacket soias to form a watercrown sheet of-the fire chamber and the top space l5 therebetween. Thetop. wall 16 of the plate ofthe boiler. This-forms; aflexible designcombustion chamber is flat: and provided with a in a wayto betterwithstandthe expansion and centralopening 17. throughwhich the productscontraction that is-especially produced by Oil of combusti n passiyfromhfi j COmbUStiOn burners and stokers, due to, the intermittent chambers,operation; i V j 1 1 8, '19- and 20 represent shallow cylindrical Theboiler, as designed, is entijrely assembled "heat chambers which are ofa pan-like form, be-

in the factory, forming a; finishedf unit, and i's igrelatively,flat,-arrangedone above the other, 30 thus adapted to bereadily transported, rolled and in; spaced relation to theouterjacketofv the into the building, stood up on its endin; place, boi eh. IW l itwill beunder tood t there and in readiness for connecting the'wate rsupply may be any desired number. of these flat chain and heat piping. Ir r bers employed in my' boilen yet for convenience,

1 With theseand other objects in-view, the inof illustrationl have shownbut, three, thesame 35 vention resides and consists in the constructionbeing of approximately'thesame size, and conand novel combination andarrangement of parts nected together and supported; as between thehereinafter more fully described, illustrated in top plate 16 of thecombustion chamber and the the accompanying drawings, and pointed out in-top plate -21 of the boiler, to form heat pas- 40 the claim-heretoappended, it being understood sages-from thecombustionchamber to thesmoke 40. that various changes in the form, proportion, outlet. size,and minor details of construction within The central portion of thelower Wall of the the cope of the claim may b3 resorted to withbottomchamber 18 is connected by a relatively out departure from the spirit,or sacrificing any large P 22 with the Opening in the p Wall 16 of tadvantages of t ti of the combustion chamber so as to freely take 45Similar characters of reference denote like or t Products of combustiontherefrom- This corresponding parts throughout the several figchamber 18and the next one 19 above it are conures of t accompanying drawingsforming nected by a series of relatively smaller pipes 23 part of thisspecification and upon which that are arranged between the outeradjacent Fig. 1 shows a central vertical section through faces of thetwo Chambers S0 ES 130 form e t 50 my improved boiler, which, as shown,is of a pa sa s m h lower t h upp r am r, general elongated cylindricalshape and adapted a whereby h heat, as it comes into the lower to be setupright for heating purposes; chamber, is caused to spread out radiallyto enter Fig. 2 is a sectional plan view taken on line the'said smallerpipes. The top wall of the inter- 2-2: of Fig. 1; and mediate chamber19and the bottom wall of the 55 boiler leaking... 1 A

bution of heat, I preferably provide a single. centrally arranged smokeoutlet pipe 25, one end of which is connected with the heatchamber ;2 0,and the other with the top plate 2110f the boiler so that the assembledheat unit within the boiler is supported by and between the said topplate 21 and the top' plate 16 of the combustion chamber, which leavesthe unit free to expand both vertically and horizontally, enablingitltofunc tion in its contracting and expanding movements somewhat likea bellows and whereby less strain is brought to bear upon the seamsand-eonnected parts, thus minimizing the possibility of the I alsoprovide two relatively smallccentrally positioned and aligned pipes26 asbetweens the several flat heat chambers which are primarily for theypurpose of allowing a freer escape of gas from; the combustion chamber,which sometimes accumulates when theoil is turned off, and which oftenserves to blowthedoor oifof the combustion chamber, when againlightedandif noprovision for the escape :of gas is made. 1 These alignedopenings also serve to permit of the proper testing of the unit, afterbeing assembled, though-before being installed, by permittingj ayrod notshown,;to be extended down. through the-said chamber andpipes .26 tosupportx-and secure a plate, not shown,against the ends of .the'pipes 22and25. :7 Y

Plugs 27 are suitably positioned in the side of the boiler casing topermita cleaning brush to be inserted and used, when necessary, asbetween the parts of the severalunits, whereas'the plugged openings 28upon the front side of the .boiler: are designed to serve a somewhatsimilar purpose, as for cleaning the :several pan-like heat chambers.These openings include short pipes' as between 'the pan-like heatchambers and the boiler casing. These short pipes are necessarily lightand suiiiciently i flexible to readily yield to such slight movements ofthe centrally positioned unit as may oc cur,- due to changes oftemperature. The cleanout plug 29 serves to 'clolsef'an openingthat'is'used as a cleanout for bottom of water space of boiler,.,and 30represents a serv,- ice outlet for hot water or steam to the radiators,not shown. 36 isan opening throughfwhich'con densed steam or coldwateris returned to the boiler from the radiators, V I I In addition to theforegoing, I also provide a hot watersupply unit which is adapted fordomestic purposes and which according to the construction can besupported and submerged within the'boiler below the water line in a wayto provide an ample water supply without the use of a storage tank. Thiscoil is inserted through an opening 31 that is closed by a plate 32, andto which the nipple ends 33 of the double coil 34 are connected. Thiscoil is preferably formed of copper tubing and isin the form of a doublecoil arranged one within the other, though-a continuation ;of,; ,the onepipe. It is arranged to be supported on the top plate of the toppan-like pheat passage 20 andmay be relatively straight, as shown inFig. 2; or deflected as shown in Fig. 3,

bet't'er'to conform to the shape of the boiler and its assembledunitsupported therein.

The modified form or oval type of boiler shown inaFig. 3 is obvio'uslywell within the scope of ,the. invention and is designed for largerinstallations'where the sizes of the doorways or openings intobasementsare; limited, Practically the only difference of this designof boiler,from the-cylin- .drica l,type, is that it, is longer andnarrower andthat the domestic heating coil carried therein is bentto betteraccommodate itself to the oval,

shapeofthe boiler. Owing to the'fact that the boiler is relatively longand narrow, it can be ,confitructed to carry more waterand includegreater. heating areas, andthus comprises a boiler ot-relatively greaterheating. capacity than is pqssible to produce in a cylindrical boilerthat gcould-becarried through a limited-sized doorway. I-Iaving'thusdescribed my invention, whatI claim and desire to secure by LettersPatent is: i ,A sheet-steel boiler weldedtogether to form a single unitand comprising an'outer waterjacket, ,an enclosedfire chamber in thebase portion of andin spaced-relation to the said outer water .jacket, aseries of relatively-flat disk-like heat chambers arranged one above theother, a centrally; arranged relatively large pipe connecting thecentral-portionof theuppermost one of the heat chambers withthe topofthe water jacket, a single centrally-arranged relatively large pipeconnecting the fi regchamberwith the lower one of the heat chambers, aseries of pipes connecting. the outeradjaeentface portion of the heatchambers, relatively small aligned pipes connecting the central portionsof the adjacent walls of :thedlfierentheat chambers fiexible clean outpipes positioned inthe water Jacket and connected, with the heatchambers, 'the said connected heatchambers forminga unit that issupported between the top of the water jacket and the topof the;combustion chamber by a single central p pe connection to each, andfree to expand and contract both vertically and horizontally Withoutaffecting the outer wall of the boiler. i

1 EARL HENRY McCATHRON.

